参数资料
型号: MAX1980ETP+T
厂商: Maxim Integrated Products
文件页数: 14/33页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 20-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: Quick-PWM™
PWM 型: 控制器
输出数: 1
频率 - 最大: 550kHz
占空比: 50%
电源电压: 4.5 V ~ 5.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 85°C
封装/外壳: 20-WQFN 裸露焊盘
包装: 带卷 (TR)
Quick-PWM Slave Controller with
Driver Disable for Multiphase DC-DC Converter
MAX1980
Q
TRIG
TOFF
ONE-SHOT
DD
BST
ILIM
0.25V
STANDBY
DH
LX
V CC
CONTROLLER
BIAS
PWM
CONTROLLER
SUPPLY
TRIG
TON
Q
R
S
Q
Q
V DD
ONE-SHOT
DL
TON
ON-TIME
PGND
V+
COMP
COMPUTE
CS-
Q
TRIG
TRIG
CS+
GMS
NEGATIVE
CS LIMIT
POSITIVE
CS LIMIT
EDGE
DETECTOR
POL
CM+
GMM
CM-
17R
ILIM
R
LIMIT
2R
GND
POSITIVE
CM LIMIT
Figure 2. Functional Diagram
In-Phase and Out-of-Phase Operation
Multiphase systems can stagger the on times of each
phase (out-of-phase operation) or simultaneously turn
on all phases at the beginning of a new cycle (in-phase
operation). When configured for out-of-phase opera-
tion, high input-to-output differential voltages (V IN >
η V OUT ) prevent the on times from overlapping.
Therefore, the instantaneous input-current peaks of
each phase do not overlap, resulting in reduced input-
and output-voltage ripple and RMS ripple current. This
lowers the input- and output-capacitor requirements,
which allows fewer or less expensive capacitors, and
decreases shielding requirements for EMI. When the on
times overlap at low input-to-output differential voltages
14
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MAX1980ETP-TG075 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1981AETL 功能描述:软开关 PWM 控制器 RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
MAX1981AETL+ 功能描述:软开关 PWM 控制器 RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
MAX1981AETL+T 功能描述:软开关 PWM 控制器 RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
MAX1981AETL-T 功能描述:软开关 PWM 控制器 RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel